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- Avdic, H. B., et al.
(author)
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Reduced effects of social feedback on learning in Turner syndrome
- 2023
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In: Scientific Reports. - : Springer Nature. - 2045-2322. ; 13:1
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Journal article (peer-reviewed)abstract
- Turner syndrome is a genetic condition caused by a complete or partial loss of one of the X chromosomes. Previous studies indicate that Turner syndrome is associated with challenges in social skills, but the underlying mechanisms remain largely unexplored. A possible mechanism is a reduced social influence on learning. The current study examined the impact of social and non-social feedback on learning in women with Turner syndrome (n=35) and a sex- and age-matched control group (n=37). Participants were instructed to earn points by repeatedly choosing between two stimuli with unequal probabilities of resulting in a reward. Mastering the task therefore required participants to learn through feedback which of the two stimuli was more likely to be rewarded. Data were analyzed using computational modeling and analyses of choice behavior. Social feedback led to a more explorative choice behavior in the control group, resulting in reduced learning compared to non-social feedback. No effects of social feedback on learning were found in Turner syndrome. The current study thus indicates that women with Turner syndrome may be less sensitive to social influences on reinforcement learning, than the general population.
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- Kocoska-Maras, L., et al.
(author)
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Cognitive function in association with sex hormones in postmenopausal women
- 2013
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In: Gynecological Endocrinology. - : Informa UK Limited. - 0951-3590 .- 1473-0766. ; 29:1, s. 59-62
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Journal article (peer-reviewed)abstract
- Several studies have suggested gender differences in cognitive function, but data on the association between sex hormones and cognitive function are contradictory. The aim of our randomized double-blind study was to explore the possible relations between cognitive function and serum levels of sex hormones, oxytocin and insulin-like growth factor-I (IGF-I) in postmenopausal women. Two-hundred healthy postmenopausal women were randomly assigned to receive estrogen, testosterone or placebo treatment for 1 month. The associations of spatial ability, verbal fluency and verbal memory with serum levels of estradiol, testosterone, estradiol/testosterone ratio, androstanediol, oxytocin and IGF-I were analyzed. Spatial ability showed a negative correlation with serum estradiol, estradiol/testosterone ratio, oxytocin levels and a positive association with androstanediol levels. Verbal fluency displayed a negative relationship with serum levels of testosterone, IGF-I and a positive with estradiol/testosterone ratio. Verbal memory displayed a positive correlation to androstanediol. Data suggest that not only absolute levels of sex hormones but also the balance between estrogen and testosterone and their metabolites may be important for cognitive function in women.
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- Koubaa, S., et al.
(author)
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Retarded head growth and neurocognitive development in infants of mothers with a history of eating disorders: longitudinal cohort study
- 2013
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In: Bjog-an International Journal of Obstetrics and Gynaecology. - : Wiley. - 1470-0328 .- 1471-0528. ; 120:11, s. 1413-1422
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Journal article (peer-reviewed)abstract
- ObjectiveTo characterise early growth and neurocognitive development in children of mothers with a history of eating disorders (ED). PopulationChildren born to mothers with previous ED (n=47) (24 anorexia nervosa, 20 bulimia nervosa, 3 unspecified ED), and controls (n=65). MethodsMean values and standard deviation scores of weight and height from birth to 5years of age and head circumference up to 18months of age were compared between groups. Neurocognitive development was studied at the age of 5years by the validated parent questionnaire Five to Fifteen. ResultsWe previously reported that mothers with a history of ED conceived infants with lower birthweight and head circumference than controls. At 3months of age, body mass index (BMI) was no longer reduced but mean head circumferences of the children born to mothers with ED were smaller throughout the observation period. Similarly, the longitudinal results of the standard deviation scores of head circumference showed a significant overall group effect with lower levels in both subgroups of ED (anorexia nervosa and bulimia nervosa). The children of the ED mothers also had significantly higher Five to Fifteen scores than controls, reflecting difficulties in language skills. Head circumference at birth correlated with language skills in the children of mothers with ED. ConclusionChildren of mothers with previous ED demonstrated an early catch-up in BMI, but the average head circumference continued to be delayed until at least 18months of age. The reduced head growth was related to delayed neurocognitive development.
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- Strandqvist, A, et al.
(author)
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Letter to the editor: Sex and the eye test
- 2018
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In: Psychoneuroendocrinology. - : Elsevier BV. - 1873-3360 .- 0306-4530. ; 98, s. 242-243
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Journal article (other academic/artistic)
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